Re: Hadoop backend?

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От Jonah H. Harris
Тема Re: Hadoop backend?
Дата
Msg-id 36e682920902231503t5009cc8co2bc10dd43de784ac@mail.gmail.com
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Ответ на Re: Hadoop backend?  (Robert Haas <robertmhaas@gmail.com>)
Ответы Re: Hadoop backend?
Re: Hadoop backend?
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On Sun, Feb 22, 2009 at 3:47 PM, Robert Haas <robertmhaas@gmail.com> wrote:
In theory, I think you could make postgres work on any type of
underlying storage you like by writing a second smgr implementation
that would exist alongside md.c.  The fly in the ointment is that
you'd need a more sophisticated implementation of this line of code,
from smgropen:

   reln->smgr_which = 0;   /* we only have md.c at present */

I believe there is more than that which would need to be done nowadays.  I seem to recall that the storage manager abstraction has slowly been dedicated/optimized for md over the past 6 years or so.  It may even be easier/preferred to write a hadoop specific access method depending on what you're looking for from hadoop.

--
Jonah H. Harris, Senior DBA
myYearbook.com

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